<template>
    <!-- 设置全屏 height 100% -->
    <el-container class="home-container">
        <!-- 头部区域 -->
        <el-header>
            <div>
                <img src="../assets/Home.jpeg" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button> <!-- type="info"灰色按钮 参见element -->
        </el-header>
        <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边栏 -->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button iconfont icon-leimucuquanbu" @click="toggleCollapse"></div>
                <!-- 侧边栏菜单区域 导航菜单 -->
                <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened
                    :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                        <!-- 一级菜单的模板区域 -->
                        <template slot="title">
                            <i :class="iconsObj[item.id]"></i>
                            <span>{{ item.authName }}</span>
                        </template>
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id"
                            @click="saveNavState('/' + subItem.path)">
                            <template slot="title">
                                <i class="el-icon-menu"></i>
                                <span>{{ subItem.authName }}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 右侧内容主体 -->
            <el-main>
                <!-- 路由占位符 welcome users等子组件 -->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
export default {
  name: 'VueHome',
  data () {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-yonghuguanli',
        103: 'iconfont icon-quanxianguanli-',
        101: 'iconfont icon-shangpinguanli',
        102: 'iconfont icon-dingdanguanli',
        145: 'iconfont icon-shujutongji'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },

  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList () {
      const { data, meta } = await this.$store.dispatch('Home/doHome')
      if (meta.status !== 200) return this.$message.error(meta.msg)
      this.menulist = data
    },
    // 菜单的折叠和展开
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的状态
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
    height: 100%;
}

.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;

    >div {
        display: flex;
        align-items: center;

        img {
            width: 50px;
            height: 100%;
            border-radius: 50%;
            margin-left: 0.5rem;
        }

        span {
            margin-left: 15px;
        }
    }

    >button {
        border: none;
        z-index: 1;
        border-radius: 10px;
        position: relative;
        overflow: hidden;
    }

    >button::after {
        content: '';
        position: absolute;
        background: #000;
        width: calc(100% - 4px);
        height: calc(100% - 4px);
        left: 2px;
        top: 2px;
        border-radius: 10px;
        z-index: -1;
    }

    >button::before {
        content: '';
        position: absolute;
        background: rgb(11, 219, 80);
        width: 50%;
        height: 100%;
        z-index: -2;
        left: 50%;
        top: 50%;
        transform-origin: 0 0;
        animation: rotate 3s infinite linear;
    }
}

@keyframes rotate {
    to {
        transform: rotate(1turn);
    }
}

.el-aside {
    background-color: #333744;

    .el-menu {
        border-right: none;
    }
}

.el-main {
    background-color: #eaedf1;
}

.iconfont {
    margin-right: 10px;
}

.toggle-button {
    background-color: #4a5064;
    font-size: 1.5em;
    line-height: 24px;
    color: rgb(17, 229, 248);
    text-align: center;
    cursor: pointer;
}
</style>
